Compression-relief mechanism.



H. W. JACOBS &W. J. LEIGHTY. COMPRESSION BELIEF MEGHANISM.

APPLICATION FILED APR.11, 1912.

Patented June 30, 191% 2 SEEETSSHEET 1.

UR miTsses H. W. JACOBS & W. J. LEIGHTY.

COMPRESSION RELIEF MECHANISM.

APPLIOATION FILED APR.11. 1912,

2 SHEETS-SHEET Z.

Tmfen ors PatentedJune 30, 1914.

sa arnis HENRY w moons Annwini mms. 'n'nisnrv, on torture, Kansas? comennssion-nnmnr 'MECHANB'M.

To all whom it may concern Be it known that we, -HENRY 1V. dances and WILLIAM-J. -Irsrscsrv, citizens of the United States, and residents of Topeka-, in; the county of Shawnee and State'oi'Kan sas have inyente'da certain new and useful Improvement in Compression-Relief 'Mechani'sm, of which the following is a description, reference being had-tothe accompanymg drawings, which form a part of our;

The purpose of our invention is the provision of means whereby a; multi-cylindered internal combustion motor may have all, a part, or noneof the cylinders in operative condition through the manipulation or con trol ofthe exhaust valves, namely by holding a part or all of the exhaustvalves of the cylinders open.

An object of our invention isthe provision of amotorso. constructed that a part I of the motor in operation as well as the en:

tire motor in operation, will be in good running balance.

A further object of the invention is the provision of an internal combustion motor having greater flexibility of power, as Well, as one resulting in greater economy of fuel, p at the same time meetingthe various conditionsvoi service to which it may be sub:

je'cted.

Another object of our invention is the provision of means whereby the difierent cylinders of the motor may be cooled, either all of the cylinders siniultaneously or a part of them at any time; the means being adapted to control the exhaust valves of the respective cylinders so that a part or all of the exhaust'valves may be held open, mas allowing cold air to be drawn into the cylinders by the reciprocating pistons and,

forced or blown out of the cylinders through the open exhaust valves.

The invention possesses other advantages Which'will be readily apparent from the following detailed description of the accompanying drawings, wherein Figure 1 is a plan view of an eight-cylindered air cooled internal combustion motor embodying our invention. Fig. 2 is a partial vertical sectional view taken on the arran .li-ne A'B of Fig. 1, looking in the direction- Specification of Letters iatent. 4 P t t J m 34 5534 Applica'tionfiled a rn ii, 191;. Serial in; 690,098.

of the arrows, with the compression relief mechanism in operative position. 3 is a detail longitudinal sectional view of the cam-shaft engaging ends of the valve operat-ing ushrod's.

cylindered aircoiiled type of internal combustion motor, wherein a cam shaft is shown extending lengthwise of the motor, and preferablyat a point above the valve The shaft 5 has its.

operating cam shaft. bearings in a su table number oat-brackets,

as at C, which may be secured to thecam shaft case for example, as more clearly ig. :1 of the drawings, We show the l application of our invention to an eight-l shown in Fig. 2, The cam shaft 5 is provided with suitably arranged camscorrespond ng in number with 'thennmber or" cylinders of the motor; the different being placed on the cam shaft so to be 111 alinement with the valve operatino" push 4 h C3, rods oi the different cylinders. ple, in the style or motor illustrated in Fig.

came; a cam is arranged on, cam shaft, 5 at a point coincident with the valve open. atingxpush rods of cylinder'D; cam 3'. is

avrrang'edicoincident with-the valve operatk For exam- '1, the cam shaft 5 is provided with eight" ingpush rods of cylinder E; a cam'fi is I coincident wi'th the-push rods-of cylinder F; a cam 9 is arranged coincident with the cylin er.

in the exempli'fication of oiir invention,-

the mechanism is" shown app'liedtc a mm ush rods'of cylinder G; "a cam T10 coin i ed coincident with the pa n-ant} of torprovi'de'd' with concentric valves; that 41s, with theintalie valve ranged 'Within the exhaust valve and momble therewith; but the invention'may be applied equally ice as well to amotor having separate intake andexhaust valves; the mechanism being adapted to control the position of the en ha st valve alone, and thereby give the nee essary condition of compression relief in the different cylinders through the action of maintaining the exlnms! valves oi the selected cylinders in open position.

The details of construct-ion and actual ily be comprehended byrctcrring to Fig. 2,

. .110 operation of the lHOl'llillliSTll can more read- Wm bc 4 11151115; thn opp )aiw undmisvksod, of co the @1141 of hw'm! 2'1) 01 a pivotal pmm, osltc nd of the T and push the age {he 001121.? 1-2 m we T051 19 upwau? beyond the point e 02in hs acted on by the cam 01 the era-$111 6 W1 51h Q). The upward rod will force e:-:-

0pm through. the action of ie- 31, thus relieving; mmpresshn in the m of i1 colmection between the m7 3 0E155 and 94:, secured to the iovv'sr ends of push rods; 18 and. 19 respem being minim 1 l'espacian'e s in the 0011*;11

'mi shmvn are wiensly described msh rod 18 e carriml upward with push rod therefom 1312 With the 4,613] of "intake valve lsh rods 18 and pushrod 18 hemp; arrimged ix; \QP- waive "whuc the outer push main lever 32 in enentmg undue 'vibra'tian and fhe action of heH cmnk level eased 01' osmllat d by the (mm 2 1b adapted. to operate the \Vith HHS construction, both valve Wgcthcr when the oxhm he mum hmvex mm] by the QKhB-N:

'Q, chm 1 5a 921 ihlis pruveml te if muih cam engaging rollers 52:3 and. ,gemtive orbit of the cams 21 shaft 20 ea the, cam

1mm ihc push r051 i8 is 0 3 721.51 0f push rod 19 Wh the valve opemt ymmlud WF'h suituhle an 5:101; 0r opemiicn 0i (xi LUZ} '1 is The Oiatmn 01*: shaft 5, "which. 15

. 0y gear .33, secured on shaft, 5,

and exhaust gem meshes 1th a gear Gem:

15) 515% gnmfh.

"he. stub bgmi J f 1.110651 01 keyed to the shaffi 15 511:} secured 91' keyed to w, which smwhiy mounted matings PFTQVidQd or. the casing of the ihe exhimf push am? 18 i.

more clearly showu' in 2. m and of shaft is provided T operating m chunism; CF21} h 36, see 1. The

crank 3G is preferably provided with :1 flat mg 31?, in one and 0' Winch, 1s secramfl a,

v 01' into a shfiway m do 9 1-, so hat apeaig'u will comps? mn'ihw has with ifs push k 336, and 731,

m y be wtatedto the f Locked w hath m 'lts yo which may extend through an opencrank 36. cured. m'ljucmn'; t0 *houtthai 0nd hich pro- 'ideni from ha conswizcfiain shown has? w as; in 0311502 1%? and hen degree and induce the desired xv .Thmmr 611521111019 Where I with :it'mzr hoies lsiy statcfl, ifs-n1" condii I'ElC-Ch :mwm, Wh @I'Qby Wham: valves may b0 A position when Fllflifl) G116 wink; a secund p0 "must valves maim 3. when mm is Alia esogeee moved to another point indicated by the socleeb or hole the quadrant, then, again, all of the exhaust. valve-s will be meinteined in open position when sheila ism-evolved so as pin to another or .ehird in the quadrant; or, none of oe efi'ooted or held 1 lioie eheqoedrenegil er-stood, course, illet gears lie or equal dinmeier, so ths s one crook 36 will produce one rev- :ih'e cam shaft 5. I

erstood, or course, as previoosly com sheik 5 is provided with a litllx 'd of some so arranged that,

fl oi posh rods of lhe diiierent cylinder may be simultaneously operated or only po men oi t'le mush rods e ci ed; arid in o the ill'i. ion F gi Where 7 ei lit-eyl moi-ed motor peserlted, mo-

ney c operated under he oll eoisdl tions, to Fill: Firsiz, Wheosliei predetermined degree, iill'efi'iilsll he cylinders will be rmelieceeo,

perini'eeing hem to remain where they will be operated. by the respective come of the vs. v'e controlling com shaftsecond, osmslime may be so rotated that the respective ,erote the proper posh rods and 1e impression in oj linders E, F, and evil iders E, El, 5, F: remain be for-- so that eompressioo will be of the cylinders through the diilereoi. fuloriimed or hell overs on she respective push rods of cylinders, who shy the rods Will beheld operative orbit of the cams on ceni shaft :20; fourth, sheft .oved or roteied to another point whereby the respective cams on Sl'ifll'll '5 and the corresponding hell crank re will control or operate the push rods of cvliiiders H, I, J, and K, move them the operative orhit of the Gems on 11w controlling coin shaft 2G, so that V on will be relieved in cylinders 1, While the some iime permitmird, cam sha 5 the lie voiid the and also oell crml; lovers 29 of the difierent cylinders t-ege oi heving e high powered motor that can loe operated with one-half the power, "when the conditions imposed on the motor ere light, may be obtained.- Y

advantage of our invention is apporespeoielly when applied to e moeor-car; a l the oer running on a level road, and 11p needs less than themsximuni power, so that a portion of she. motor cen be et out, time saving theextra fuel necessary operate all the cylinders when the power ilglffifllflfillll he delivered by :1 portion or I nelr i:

ie'iiomber of cylinders; While at the v some siege, sold air Will be drawn into the io" Cylinders, -through their opeii oust valves, resulting in m efiec iual cooling of the cylinders and their velvess It is evident, "hereifore, elm the mechenisf; permits of a much wider range of power; greater economy; end also provides an exoellem, meshed oi cooling that port of she motor which is running light. Should th zhside' or portion of the motorin operation show eendenoy to heat, it can be readily alternated with. the osher'or cooled side or oortioo- When meesioii' orises Where themotor need not deliver power, the entire motor, or rather ell e lioders eon be put into inoperative condition, through ilie proper-J" relation of mm shei'i'. 5, as above described; and oy spinning creek shaft 36, end therefore'ooiri sheil 5 also, ell cylinders of the motor eeri be speedily scevengecl and cooled, resulting in very great advantage in the starting mid menipuleiion of the motor. I

Wire oor improved mechanism applied to an internal combustion motor, it will ,be' seen that greater flexibility of power, as well as greater ioel economy may be hedv'then with other meters of she some designated power; While ee the some time, providing a n eegieble of m'eetirlgell conditions of service to which may be put.

e have shown arid described What We 'believe to. so the simplest sndbest form of our inveiziiol'i, out the same may be varied is. certain details Without, however, do arting from the spirit of our invention. W e do not Wish, therefore, who understood as limiting ourselves to the exec-t construction shown and described, but

Whet- We claim as our invention, and Wishv to seoureby Letters Patent, is

1". Compression relief mechanism, consist- I log of meens intermediate and independent oi the valve operating cam shaft of an internal combustion motor and the valves of the cylinders of the motor, said means comprising a rotatable portion end an oscillating" per-mos in oonsient direct operative relation with each other, whereby the valves may be maintained inoperative.

2. Compression reli f mechanism, consisting of rotatable moons arranged intermeclialgo oi" ljllO valve operating ll. shaft of on molor and the EXl1zilv-li evlmust .omnlmsl'lon wolor 11ml (lac valves of the vylprising means intermediate of the valve opomtlou; 021m shaft of an internal combustion llwl'ol zm il the val V518 of the oylinclm's of the n'lotolg whereby tho valves of ouo-lml'i? of motor may '00 held open in an lnopemluvo A mltl means is 1110 1 :1 promo and the volvos of tho other half lH ll open in 211 inoperative posi'llon Wl'len. said means is given a, greater (l :0. ol' niovcn'lont. v

5 Compression relief moclmnimn, 'com- )IlSli'lQf P'wm. inl-arrnleinlo of the vo calling on o slm'l l; of an lnliorl'ml comm motor :1 Ml lho valves of the (ffflllllllG'S of moon; wlwwby tllovzvl vo a of one govllon oi tlao motor owl llama lillo YPlVuS of the z'omzvil 5m: portion or po lions of The motor 1 lflG auccefisivol held open in {an inopol'omvo :0

Balance mflllll lllfmfl.

moolmr v ntlapl; r 4 a who. in vmiioos oyllmle'rs m. 0.1 in'erwl oozn lion motor uid! means being; mvmlw :1- pieflfll ifllllflefl numb-ea? oi Kl'mllSi ovm'i when votntorl :1 pvollotorminml so :nul arranged to Mlfl the oYlvzmsi of all of the o fnlQI'S open vvlmn glwjil a alter Clegrco o: rotation" [f mssion (Ellii'll moolmnism for rm (.(lll'ilfllfi' llffllmotor, cmnprl lug; 2v .Lolation eronl; cyl

i n-v? in com olmll: azlapliocl to have ope a h Wll-l] the exhaust valves [he Ll'lll TRllfilifi of ilao motor the cams oi soul- 'mlng so {H.l: aged that a portion of the ex" lmins valves o'l? th motor Wlll be held open in an inovmmlivo position who will shall; has: lveon rotated 21 pz'evlelel'mluml state; ull the exhaust vnlvos of all on? the ovln'ulovs helvl opon in am inoperative position sairl sl wi l, given & grealer dogma of 339E111" lion.

r "Compression relief meclmi'lism intend-ail combustion mol; ,1, con vrlfl mlzallly mounted 421mm,: :mcl

lnonnl'ovl vnomlwr' lnl 11ml lilo? (Xlll 3119mm; lowing: :1 mombc-vs when gyro/0 wlvovelqv lllo Qxlmml volvos l"l'lnlll\(l nmnl'wv ol cvlimlors an lvolcl i: open pom-ion. "yvhilc n 'lllllllfl (log; 00 of 1'0- tolion M will means will llit tho rmonlningz; nun'alvor o'l. llll'nblo members and, maintain llm oxlmnsl: ol :1 socoml prellolor- 1n wl number of r'vliiulvvs in open position.

9. f ion roliofi moclmnlsm for m loljmnnl oomlms'lgiml motor comprising volaalnblo moons, {lillfl tilt-ably mounted mocha-- mom intcl'n'lodinle of said moons and flu oxlmust valve push rorl of ezmlx cylinder, said 111011115 lwing arranged to till a, portion of said, nwolmnism when rovolvmil. 21 predol'c-rmloozl degree and laherobv lift opfoclo lcvmtlocll ni'm'zbcr of push vocls out of the opomt'lvo ox'biu of llle valve operating cam oi the motor, while fuvllmz' (le rco of rotation will l lllt the remaining: povli on of said HHEClNlTllSlD. and. ll ft the remaining number ov all of film pmh lOllH out of llxo operal'ivo mbil of the valve m crnlingg; cam shaft of the motor,

[ ol'nyu'ossion mliof mechanism for :1

szluUS inl' mall. comlms ion moto: comprising means zulaptml 50 be plncocl mto opomtwo Tczlatioz'x with the exhaust valves of the oyl when moved to predetermined pOinlS portion all of film efillimst 'nminminovl in open position [1o rimming; balnnos of tho Jmosl; mlvo -on motom l" to siuvl t me ml cm lo motor ole 1.

m inlev :nnjlllxo walls said ml m all? 'pa'ezvlwormmevl so; when moved or arcs of a circle. the exhzmsi; valve l. combustion motor, mounlotl adjacent to said will mews be ogg am'zmgerl to lift the push IOLlS pl'ol eyminecl number of exhaust valves wl'xen movocl lhrou h difierenl; gross ov oil a circle anal mechanism vlmeluy Sfilfl means may be operated and posi'lfiion *ghewol? moi tainell; In combinmion with the exhaust valve "mils an inlzomalcombustion motor, oblamezms, tiltailale mechanism intervl s'le of "(1 means; mcl the rolls, said being arranger: to fill; prmlelorminod.

mation of a rotatably' through rlifierent degrees or arcs'ofa circle,

and mechanism whereby said meansfmay -be with said push rods, with'me'ans interinediate of said cams and the push rods whereby operative relation between said cams andthe push rods is established when said shaft is given different degrees of rotation thereby maintaining the exhaust valves in open position. I 16. In a multi-eylindered motor, provided with a valve operating cam shaft, and exhaust valve operating push rods, the combination of a rotatable shaft provided with prearrahged cams at points coincident with said push rods, with tiltably mounted members intermediate of said cams and the push rods whereby operative relation between said cams and. the push rods is established when said shaft is given difierent degrees of rotation and the exhaust valves maintained in open position.

17. In a multi-cylindered motor, provided with a val e operating cam shaft, and exhaust valve operatingpush rods, the c0mbination of a rotatable shaft provided with prearranged cams at points coincident with said push rods, tiltably mounted members intermediate of said cams and push rods whereby operative relation between the cams and the push rods may be established, with mechanism whereby the shaft may be given different degrees of rotation and a portion or all of the push rods moved out of the operative orbit of the valve operating cam shaft.

18. in a multi-eylindered motor, provided with a valve operating cam shaft, and reciproca'c-ingly mounted exhaust valve operating push rods, the combination of a rotatable shaft provided with prearranged cams at points coincident-with said push rods, piv-' otally mounted members intermediate of said .cams and the push rods, with means for r0- tating'said shaft whereby the members are '50 tilted and the push rods reciprocated beyond the o erative orbit of the valve operating cam s aft.

19. Compression relief mechanism for an internal combustion motor, comprising a rotatable shaft provided with prearranged cams, spring controlled tiltably mounted members arranged to be engaged by the respective cams on said shaft, and means whereby said shaft'may be giventhe desired degree of rotation and maintained: in position, in combination with the exhaust valve operating push rods with which the tiltably mounted members are adapted .to engage,

20. An internal combustion engine ico'x'nprising a plurality of pairs of explosive 'cyl- 'inders, the cylinders of-each' pair being set obliquely to each other,v inlet and fexhaust' ports for each'cylinder, inlet and exhaust valves for 'said ports, means to actuatesaid 7i valves and to operate said ala ine, and mech; anism to throw simultaneous y by'means of asingle movement the valves of a plurality of cylinders into such position that said cylinders will be inoperativeduring the continuous operation of the-engine.

21. An internal combustion engine, comprising a plurality of pairs of cylinders, the cylinders of each pair being set obliquely to each other, a driving shaft common to all of said cylinders, valve mechanism and ignition means common to all of said cylinders, and manually controlled means to render all the corresponding cylinders of the successive pairs on either side of the engine operative,

while leaving the cylinders on the other side of the engine inoperative.

HENRY W. JACUBS.

WILLIAM J; LEIGHTY.

Witnesses: 5

FRANK lilrroilnmi, H. LARIMER. 

